MATLAB: How to choose a particular input source to be used in the Simulink model with multiple sources in Simulink 7.6 (R2010b)

simulink

I have a Simulink model in which I have multiple sources that feed an input signal to the forward path. I would like to choose a particular input signal based on a condition or a user defined method.

Best Answer

You can use the 'Multi-port Switch' block in Simulink to help choose a particular input signal to be connect to the forward path.

The attached 'example.mdl' demonstrates this use case. In this model, the user can choose the desired constant source block using the drop down box in the 'Selector_subsystem'. C1, C2 and C3 represent sources 1, 2 and 3 respectively.

To see the implementation of the 'Selector_subsystem', right click the block and select 'Edit Mask'.

Related Solutions

MATLAB: What is the function of the undocumented block parameter “SourceBlock” for certain blocks in Simulink 6.6 (R2007a)

A block which is a library block, and has an unresolved library link is represented by a Bad Link block in a Simulink block diagram. Such a "Bad Link" block has the block property "SourceBlock" which refers to the missing library block. For example, if you change the library name from lib1 to lib2 then the following would work.

bad_links = find_system(model, 'LinkStatus', 'Unresolved');
sources   = get_param(bad_links, 'SourceBlock');
sources   = strrep(sources, ['lib1/'], ['lib2/']);

MATLAB: Source code

Odd, someone else asked much the same question a few hours earlier. See my (serious) answer there: http://www.mathworks.com/matlabcentral/answers/25717-function

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Related Solutions

MATLAB: What is the function of the undocumented block parameter “SourceBlock” for certain blocks in Simulink 6.6 (R2007a)

MATLAB: Source code

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